Logo

Session Report

Summary:
Test run at: 2020-05-11 17:31:47 GMT
Client Prefix (v4): 195.144.21.x/24
Client AS (v4): 174 (COGENT-174)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.

IPv4 Adjacent Netblock Testing:

Your host (195.144.21.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
195.144.21.x/24/31174no
195.144.21.x/24/30174no
195.144.21.x/24/29174no
195.144.21.x/24/28174no
195.144.21.x/24/27174no
195.144.21.x/24/26174no
195.144.21.x/24/25174no
195.144.21.x/24/24174no
195.144.20.x/24/2312301no
195.144.23.x/24/22197883no
195.144.17.x/24/2135414no
195.144.29.x/24/2038954no
195.144.5.x/24/19702no
195.144.53.x/24/183303no
195.144.85.x/24/178201no
195.144.149.x/24/16UNROUTEDno
195.145.21.x/24/153320no
195.146.21.x/24/146663no
195.148.21.x/24/131741no
195.152.21.x/24/121290no
195.128.21.x/24/1161157no
195.176.21.x/24/10559no
195.208.21.x/24/9UNROUTEDno
195.16.21.x/24/86848no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
Last Modified